How to install a speed switch on a speed bike

How to install a rear derailleur on a bike?

Having clocked many kilometers on a bicycle, I was convinced that a branded derailleur is much more important for a comfortable ride than stylish grips or leather Brooks. But it’s not enough just to buy Shimano or Sram, the quality of installation and setup is important.

A bit of boring theory

The rear derailleur mechanism throws the chain over the cassette stars, allowing you to lower or increase gears (for reference, it was invented by the Italian Tullio Campagnolo back in 1950). This device also keeps the chain taut. Since the invention, many varieties have been created. A little about the main, most characteristic features.

  • Manufacturing material. From steel to carbon. The entry-level models are equipped with steel, and not always of good quality, and plastic. In the right hands, these switches even work sometimes. Models of the middle category are in most cases made using aluminum. The most expensive models can boast not only precision in work, but also titanium, carbon or composite.
  • Frame size. In theory, everything is simple. the longer the frame, the more gears you can select. However, one cannot say so categorically, since someone will prefer a short frame that is not afraid of stones, while others are interested in greater comfort in switching. And everyone is right in their own way.

You can still describe in detail the action of the spring or the options for the location of the cable for a long time. However, many good articles have been written on this topic. I will only note that there is not much difference from which side the cable enters the switch. So, now about the interesting.

Installation and adjustment

Reference: The Shimano Tourney TX is the entry-level model, although the exterior design suggests a higher class.

And to put something more serious on an inexpensive bike used only for riding exclusively on asphalt. meaningless. Switching range was important, however, as the city is teeming with hills, hills and mountains.

So, replacing the rear derailleur begins with removing the old noname from the frame. it’s time for Shimano. The link of the chain is revealed. If this is not the case, then you need to use squeeze.

diy 3 speed switch

The old switch is unscrewed and removed, and a new one is hung in its place and screwed to the “cock”. protruding triangle with a hole in the frame. It is worth tightening well, but without undue enthusiasm.

We put the bike chain on the smallest star. Visually, the roller and small sprocket should be on the same line. The small star is the highest speed, therefore we adjust the position of the roller with the screw H.

Help: the letter H is an abbreviation for high gear, that is, top gear.

The next step is to insure against the possibility of the chain hitting the spokes, which is likely if the derailleur goes behind the largest sprocket. To do this, you need to move the switch to the largest star, carefully and without unnecessary effort. In no case by the roller, the mount of which is very easy to bend.

The adjusting screw fixes the position of the switch exactly so that it is opposite the large sprocket. Going behind it is fraught with the loss of knitting needles and good mood. If the switch is too tight, there will be no lower gear.

install, speed, switch, bike

Queue for the cable. he should be free to wear a shirt. We check the progress and the absence of creases. On this switch model, you can see the place for the cable to pass. We put the chain on the smallest sprocket, tighten the cable to remove the slack, fix it. Thus, installing the rear derailleur and adjusting it are two integral, complementary processes.

Now check the operation of the entire mechanism. There should be no pronounced clicking sounds when pedaling from the rear derailleur side. Switching up / down must be accurate, without skipping and delays. And even if everything fell into place, it works accurately, quietly and without delay. for the first trip it is worth taking a screwdriver with you. Working with a load may well require minor adjustments.

Note that you will have to face such a concept as “preventive maintenance of the switch”, regardless of its price category. As the rollers, which are consumables, wear out, their timely replacement will be required.

It is believed that installing and adjusting the rear derailleur is much easier than the front derailleur. However, you will have to spend time and effort, but this work will pay off handsomely during the trip.

Correct installation of the front derailleur

You can only start the front derailleur setting after adjusting the rear derailleur. Installation is the initial step in adjusting the speed switch. It’s very important to do it right.

  • before installing the switch, it is necessary to inspect the condition of the constituent parts and, if necessary, clean them from dirt and lubricate.
  • The next step is to adjust the location of the front derailleur. On the frame, it should be located along the pipe under the saddle.
  • Set the steering angle parallel to the drive sprocket on the front cassette of the transmission unit.
  • Next, you need to adjust the gap between the underside of the derailleur frame and the upper mowing line of the teeth of the large gear. The gap should be minimal.
  • Adjust the cable tension.
  • Place the chain close to the inside of the frame.

It is also worth paying attention to setting up the chain. The bicycle chain is a very important element, with the help of which the impulse is transmitted from one chain to another and the adjustment process takes place. The technical condition of the circuit is of great importance for the operation of the entire system. If, for some reason, the bicycle chain stretches or deforms, this cannot but adversely affect the operation of the entire transmission unit. To prevent this from happening, the chain must be periodically removed and cleaned, and then set the correct position. There are lock and lockless models of bicycle chains. They differ in the way they are connected. To remove the locking chain, it is enough to find the link with the lock and disconnect it with a screwdriver. The lockless bicycle chain is disconnected using a squeeze. This tool helps to push the link axle out and make the connector. If it skews for some reason, this can adversely affect the gearshift process.

One of the best manufacturers of bicycle parts, including derailleurs, is the Japanese company Shimano, which has a proven track record of producing products in which Japanese quality is combined with budget and price. Shimano derailleurs are suitable for all types of bicycles. Shimano derailleurs are installed on both regular touring bicycles and mountain and track bikes with gearboxes up to 33 speeds.

Another recognized market leader is Sram. The products of this company are used on bicycles of the city bike category, as well as on sports bicycles. Sram products are of good quality and affordable price for cycling enthusiasts.

Every bicycle owner who prefers this type of transport to others is obliged to understand how to switch its speeds. It is believed that the more speeds a bike has, the better it is. But in fact, speed only allows you to improve the quality of maneuvering and squeeze the maximum out of the bike’s capabilities, so then everything depends on the dynamic efforts of the person riding the bike. Conventional bicycles have a simpler design compared to high-speed ones. With a bike like this, there is less hassle, but it also has fewer options. In the transmission unit of such bicycles there are only two stars: one large and one small. Multi-speed bikes, which have gained popularity in recent years, have two sets of sprockets in their transmission units: front and rear. Each cassette consists of stars of different sizes. To switch gears correctly, you need to remember a few basic rules:

  • If your bike is not equipped with a planetary hub, you only need to switch gears on it while driving, otherwise there is a danger of damage to the bike.
  • During gear shifting, it is not necessary to apply significant dynamic forces, in order to eliminate the danger of a burst of flowers, it is advisable to change gears sequentially, without making sharp jerks.
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How to install a rear derailleur on a bike?

Having clocked many kilometers on a bicycle, I was convinced that a branded derailleur is much more important for a comfortable ride than stylish grips or leather Brooks. But it’s not enough just to buy Shimano or Sram, the quality of installation and setup is important.

A bit of boring theory

The rear derailleur mechanism throws the chain over the cassette stars, allowing you to lower or increase gears (for reference, it was invented by the Italian Tullio Campagnolo back in 1950). This device also keeps the chain taut. Since the invention, many varieties have been created. A little about the main, most characteristic features.

  • Manufacturing material. From steel to carbon. The entry-level models are equipped with steel, and not always of good quality, and plastic. In the right hands, these switches even work sometimes. Models of the middle category are in most cases made using aluminum. The most expensive models can boast not only precision in work, but also titanium, carbon or composite.
  • Frame size. In theory, everything is simple. the longer the frame, the more gears you can select. However, one cannot say so categorically, since someone will prefer a short frame that is not afraid of stones, while others are interested in greater comfort in switching. And everyone is right in their own way.

You can still describe in detail the action of the spring or the options for the location of the cable for a long time. However, many good articles have been written on this topic. I will only note that there is not much difference from which side the cable enters the switch. So, now about the interesting.

Preliminary actions

If you have to install a new switch or are preparing to configure an already installed system, before proceeding, you need to check a number of parameters.

It is necessary to inspect the system and check for backlash or damage. It so happens that after prolonged use on some parts, for example, a guide frame or parallelogram, gaps form. And also parts, especially the frame, can get damaged and bent from loads and falls. This can cause problems when adjusting your bike’s front derailleur.

Be sure to thoroughly clean all parts of the device from dust and other dirt, then apply grease. First of all, it is necessary to lubricate all moving parts of the device, namely the springs and the parallelogram itself. If necessary, you can remove the shifting system from your vehicle’s frame. These actions will also contribute to a better visual inspection, which was discussed in the previous paragraph.

And it is also necessary to clean the switch cable and check its integrity. If the cable is very dirty, you can detach it from the fixing bolt and pull it out, but it can also be cleaned without removing it. Then, inspect the cable for broken strands. Then, if everything is in order, the cable also needs to be lubricated.

It is required that the rear derailleur has already been tuned as it is used as the master during tuning.

How to adjust the front derailleur

There are also clear and simple step-by-step instructions for adjusting the front derailleur:

  • Shifting the chain to a smaller star.
  • Unscrew the fixing screw and release the cable.
  • We find the screw marked “L”, with its help we adjust the position of the frame so that the chain is between the plates of the frame, but at the same time does not touch them.
  • We stretch the cable, fix it with a screw.
  • Now we move the chain in the cassette to a smaller sprocket. it is convenient to do this using the rear derailleur.
  • With the front derailleur, move the chain to the middle sprocket and look. if the chain on the second one touches the outer side of the frame everywhere, then you need to increase the cable tension using the drum located on the left shifter.
  • We switch the gear to the largest sprocket in the cassette and check. if the chain touches the walls of the frame, you need to move the last element so that the chain is in the middle. This manipulation can be done using the screw marked “H”.

How to properly adjust the rear derailleur

To independently adjust the rear derailleur on a bicycle, you just need to strictly follow the step-by-step instructions from specialists in this process. So, follow all the steps:

  • Move the chain to the small sprocket with the right shifter.
  • Unscrew the fixing screw and release the cable.
  • Find the screw marked “H”. Use a screwdriver to adjust this screw so that the smallest star lies in the same plane with the rollers, which are located in the foot (frame).
  • Pull the cable by hand and fix it with the screw.
  • Check the operation of the switch, and if it does not work correctly, the chain does not switch well to large stars, then you need to tighten the cable harder (either with the help of a drum or with a switch).
  • Move the chain to the largest sprocket available in the cassette.
  • Find the screw marked “L” and adjust it so that the tab (frame) and the sprocket are in the same plane. in this case, the crossover will not be able to get into the spokes of the front wheel.

Installation and adjustment

Setting the gear selector is not an easy task, and especially for a beginner, it will be very difficult to cope with it. Better to leave it to a specialist. But the rear and front derailleurs are worth learning how to set up yourself. This requires a number 5 hex wrench and a Phillips screwdriver. It is most convenient to set up when the bike is in a position with the wheels up.

Rear derailleur adjustment is as follows.

  • The chain is thrown to the smallest sprocket by pressing the shifter on the right side of the handlebar.
  • Next, the switch is unlocked by releasing the screw that holds the cable. This is done by unscrewing the screw marked “H” with a screwdriver.
  • This screw adjusts the sprockets holding the chain so that they are positioned along the same mowing line.
  • Now you need to pull the cable, and then fix it using the screw.
  • Next, the switch is checked for proper operation. If necessary, you can improve the transition to large stars by turning the thumb counterclockwise.
  • By pressing the shifter, the chain is shifted to the smallest sprocket.
  • Use the screw marked “L” to set the switch position so that the largest rear sprocket and the switch foot are on the same mowing line.

Front derailleur adjusts slightly differently.

  • The shifter moves the chain to the smallest sprocket in the front and the largest sprocket at the back at the same time as the pedals are pressed.
  • Next, the screw holding the cable is released. This is done with a hexagon.
  • With the screw marked “L” using a screwdriver, move the frame so that the distance between its inner part and the chain is about 4 mm.
  • Then the cable is pulled and the screw is tightened that holds it.
  • To debug another star, you need to throw the chain on the back to the minimum star, and leave it on the smallest in front. If the chain touches the frame, then you need to adjust the cable with a thumb, which is located on the left side of the steering wheel. It is worth remembering that the lamb must be mixed counterclockwise.
  • The third sprocket is adjusted with a screw marked “H” and a screwdriver.

Description and purpose

The greatest cycling comfort and excellent energy savings are provided by a gearshift or derailer. With it, you can choose the optimal travel mode, which is fully suitable for a specific route. The switch is especially useful if the track changes from asphalt to off-road.

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You also have to use the device when accelerating, braking smoothly, and climbing uphill. It is worth noting that thanks to the switch on the bike, you can maintain a constant speed, which is very convenient when overcoming long distances. Difficult weather conditions such as strong winds or slippery tracks are also easier to handle with a derailer. It’s no secret that the bike is a great cardio trainer, which is greatly facilitated by the speed switch.

Derailer, which we know today, was invented in the 50s of the XX century by an Italian cyclist. The classic design is a block of stars. The unit that is installed in the front is called a system, and that in the back is called a cassette. The gears are shifted by shifting the bike chain to the side, which ultimately allows the chain to lie on the selected sprocket.

All stars differ in diameter, and the chain has a fixed length. Thus, it sags, but this moment is removed by a special tension spring, which is located on the rear of the switch.

Typically, bicycles have 1 to 3 drive sprockets and 3 to 12 driven sprockets. This number creates over 30 speed combinations. Of course, some transmissions can be repeated.

install, speed, switch, bike

BICYCLE SPEEDOMETER |HOW TO INSTALL

The switches are controlled by cables. You can adjust the tension of the cables using the shift knobs. There are shifters on the steering wheel that pull the cable. When you press the shifter, the frame is displaced, and the chain is thrown to the adjacent star.

There is also an option where the switch looks like a drum that simply spins to the desired speed mark. The bicycle derailleur can also be made in the form of a trigger or a combination handle. Recently, electronic shift control is gaining popularity, which allows you to shift through all the stars at once.

It is worth taking a closer look at how a traditional gearshift works. The system speeds are located on the left side of the rudder handle, and the cassettes are located on the right side. When shifting the chain from one chainring to another, it is important that the pedals rotate. Also, it is impossible to pedal back in the process of switching between speeds so that the chain does not jam and the transmission does not break. It is worth noting that there is no rear derailleur on models with foot brakes.

Modern manufacturers present different types of switches that are created for different types of cycling.

  • The external derailleur is the most common type and consists of a front and rear derailleur. This option works by throwing the chain between the stars through the frame. The advantages of this switch include lightness, clear design, and a large number of speeds. Also, energy is not lost due to friction of mechanisms inside.

However, it must be taken into account that such a switching system is subject to weather conditions. Over time, the chain will wear out due to severe skew. Gears can only be changed while driving, and it is important to protect the bike from falling. Among the disadvantages, users also note the need for frequent maintenance.

  • An internal or planetary derailleur is a mechanism that sits on the inside of the hub at the back. It has only one star in the back and front, and a chain. The number of speeds in such models starts from 3. Most of the bike models with planetary hubs are also equipped with a built-in brake system, which is very convenient.

The advantages include high resistance to adverse weather and bad roads, high reliability, durability, ease of maintenance. Also important is shifting gears without pedaling. In doing so, you need to know that the internal switches have an impressive weight. In such models, excessive friction of the nodes occurs, which leads to difficulties in movement. Among the minuses, it is worth noting the complexity of the repair.

  • Combined. a hybrid of planetary and external switches. Most often they are equipped with urban models of bicycles. This type is characterized by the pros and cons of both switching mechanisms.

Popular brands

The most popular brand currently is Shimano. This company is known for producing a wide variety of switches, ranging from the cheapest to professional models. Many models from the manufacturer Shimano allow you to choose the best option for any bike: road, city or mountain. For beginners, the “Sora” or “Tiagra” model is an excellent option.

Among the popular manufacturers, it is worth noting Sram. This company manufactures speed switches in different price segments. The main difference is the lack of thematic lines. Among the simplest and cheapest are the models “X-3” and “X-4”, and among the highest quality “X-7” and “X-9”.

Shimano’s main competitor in the near future is the Taiwanese manufacturer Microshift. The main feature of the company is good quality at low prices. Many European countries have already appreciated the speed switches of this company. It is worth noting that among the advantages of this brand there is another very important one. full compatibility with Shimano derailleurs. This plus can be used very profitably during repairs.

For lovers of the highest quality, you should pay attention to the German manufacturer Rohloff. Its planetary hubs are carefully selected and assembled by hand only. The advantages of the products of this company are huge, but it will also be quite expensive to pay for them.

How to choose?

The choice of gear shifter on a bicycle primarily depends on the price issue. However, it is important to consider some technical characteristics. One of the most important is the type of attachment. The following mounting options are currently available:

  • clamp to the frame pipe;
  • on a special site;
  • on the carriage of the bicycle.

It should be borne in mind that the last two options are quite rare guests on the modern market. When fastening with a clamp, take into account the thickness of the bicycle frame.

When choosing a derailleur, it is also important to choose the type of steering cable wiring. Most often, the cable is pulled to the speed selector or down the bottom tube under the carriage or the top tube of the frame. Thus, there are universal derailleurs, as well as top or bottom link.

Another important point is the parameters of the star system. The most common are two or three speed systems. It is also important to know the number of stars in the rear derailleur as the chain thickness depends on this. It is better to take into account the dimensions of the largest sprocket, the capacity of the system, the minimum difference of teeth on the large and medium sprockets, the length of the carriage axis and the angle of the chain stays.

Bicycle speed selector: types and choices

Modern bicycles are equipped with gearshift switches, which are especially useful when riding on varied terrain. Of course, in order to understand which switch option to choose and how to properly care for it, it is better to familiarize yourself with it and its features in more detail.

Subtleties of operation

The gear shifter on a bicycle works precisely and for a long time if it is used correctly. To do this, you should familiarize yourself with some recommendations. For example, switching between speeds should be done exclusively while cycling. It is also recommended to reduce the pressure of the feet on the pedals when changing gears, especially this will facilitate the condition of the front derailleur.

install, speed, switch, bike

Before going uphill, it is better to change gears beforehand This advice should be followed by beginners who do not yet know how to “feel” their transport. Also, do not shift multiple gears at once. The transition between gears should be carried out gradually so that the chain has time to jump to the previous sprocket.

It is important to learn not to over-skew the chain. This happens when using small or large chainrings and chainrings at the same time.

How to choose a bike derailleur in the video.

Competent installation of the front derailleur

So how do you set the front view of the speed derailleur correctly? Consider the algorithm of the necessary actions.

  • We determine the correctness of the position. It must be such that the axis of the direction frame is parallel to the chainrings. over, the gap between the outer part of the frame and the largest star did not exceed two millimeters.
  • The distance to the large sprocket is adjusted by moving the cross-over. Bending the parallelogram, we correlate exactly the frame and the largest sprocket, trying to minimize the distance.
  • Sometimes the manufacturer sets the necessary marks on the frame.
  • Now we determine the height and the point where the fixation of the switch clamp will take place. We mark the place with a marker. We tighten the bolt.
  • We adjust the axle in relation to the stars by loosening the bolt on the clamp.
  • Rotate the switch with the frame position parallel to the chainrings.
  • We tighten the bolt on the clamp and check the distance of the frame to the largest star and their parallelism.
  • We finally fix the clamp.
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Installation is complete, you can proceed to the next stage. setting.

Speed ​​selector setting process

How to properly adjust the front derailleur of a bike?

We will write this instruction step by step with a description of the necessary actions.

  • Set the smallest speed option on the switch. It is better to tighten the cable tension adjustment until it stops.
  • At the same time, the rear derailleur is set to the lowest speed. It turns out a chain on large sprockets in both versions.
  • The limiters are set in such a mode in order to bring the frame (inner part) as close as possible to the chain.
  • Now we insert the cable into the place of fixation and tighten it with a bolt.
  • We install the gear on the large sprocket in front and the smallest one behind.
  • The second stop is adjustable to bring the outer part closer to the chain.
  • We set alternately different speed options on both cross-overs. While spinning the pedals, we switch at all speeds. If everything is in order, then you need to go to the road for testing there.

In principle, there is no particular difficulty, only patience and attentiveness to the details of the process.

Causes of functional impairment of the rear derailleur

Moving on to the problem of how to install rear derailleurs on bicycles.

Before adjusting or adjusting the rear option, you need to assess its condition. There are several reasons on the basis of which a malfunction of this device will be detected. In this manual, we will not only describe the possible causes of the problem, but methods for their elimination.

  • All dirt must be cleaned from all the switch and its parts.
  • We estimate the degree of wear of the cable with its cleaning and lubrication.
  • The chain must also be lubricated, having previously selected the desired lubricant.
  • Do not forget to clean and lubricate the front and rear wheel cassettes.

The preliminary stage is over, go directly to the rear derailleur setting.

Adjustment process and front derailleur settings

Before adjusting or installing the front derailleur, it is imperative to carry out a preliminary step. Without it, the adjustment and setting of this switch will be impossible.

  • We carry out a check for the correspondence of the throw under the asterisk system. It often happens that the acquired mechanism does not correspond to the stars of this particular model in its technical parameters. No tweak will help here. You only need a transfer from the original manufacturer.
  • It is obligatory to check for existing backlash. During previous falls or collisions, the frame and parallelogram have formed backlashes. The transmission will immediately become indistinct and setup will be problematic. Visually assess the condition and eliminate defects if possible.
  • All elements of the switch must be cleaned of adhering dirt. It will definitely not give the opportunity to correctly tune the transmission. After that, lubricate the entire product.
  • The next step in the preparation process will be the cable. We assess its condition after the dismantling process. If gaps are present, urgently need to be replaced. Otherwise, we clean it from dirt and lubricate it. It is not necessary to put it back in its place. This will happen during the setup process.
  • We focus on cleaning and lubricating the chain itself.
  • We recommend that you already have the rear derailleur adjusted by this time. This will make it easier to adjust the front mechanism.

After all the preliminary measures, you can start setting and adjusting the front derailleur. If the matter is much more difficult, then we begin to mount the new derailleur purchased in advance on the bike.

Installing the speed switch on the bike

Any human invention does not last forever. This criterion also applies to a bicycle. But, if any element is broken, then it can be repaired or replaced. This article will discuss how to install speed shifters on a sporty bike. over, the review will concern not only the installation, but also the process of adjustment and tuning.

There are many reasons why such a part requires replacement or increased attention. This can be a breakage caused by a fall, a stretching of the cable, poor functionality of the entire device. In order not to take the bike to the workshop and not spend extra money, we provide the necessary action algorithms related to the problems described above. It is possible to solve such a question at home. It takes a little patience and careful study of the instructions provided.

The main design features of the front crossover with the principle of operation

In order to answer the question about the installation of speed switches, you first need to describe their design features.

Let’s start our analysis with the structure of the front version of this product.

  • What is a clamp for? With its help, this object is fixed on the bike.
  • Parallelogram. Element, in the form of a spring-loaded part with hinges. Geometrically resembles a parallelogram. This is the basis for the front swap movement.
  • Guide frame. Consists of two parts. Internal and external. The movement of the chain is carried out on the inside.
  • Adjustment bolts. Presented as two limiters. Their task is to prevent the movement of the frame in the direction of the main frame or in the opposite direction.
  • Bolt for fixing the cable. Its purpose is to provide a reliable fixation of the cable, which serves to organize gear shifting.

Front derailleur setting.

We briefly reviewed the design. Now we will describe the principle of operation of the product. As with any sports bike. the main task is to simply direct the chain to the selected sprocket.

Consider the process of switching from a larger star to a smaller one. This action weakens the cable tension, and the spring begins to pull the parallelogram together with the direction frame a short distance to the frame. In this case, the outer part of the frame provides pressure on the chain, which leads to its jumping to the desired sprocket.

If you need to jump to a large star from a small one, then the whole mechanism occurs in the reverse order.

The parallelogram, upon reaching the extreme points, rests against the limiters, which do not allow the chain to jump onto the carriage.

Adjustment process and settings of the rear derailleur

The preliminary stage is over, we begin the steps to set up the rear wheel switch.

  • Position. largest star in front, smallest behind.
  • Removes the bolt securing the cable and remove it.
  • We adjust the tension of the cable by twisting.
  • To prevent the chain from jumping off, set the limiter to the desired mode. The goal is to achieve the correct ratio of the axles along the tensioner roller, the guide element and the smallest sprocket.
  • The cable is pulled by hand and inserted into the prepared groove. We make fixation.
  • Now transfer. We check the clarity of the chain jumping from a large star to a smaller one. The parameters of speed, clarity and silence are important here.
  • Adjusting the second stop. The rollers used for shifting and the largest sprocket must be on the same straight line.
  • The chain tensioner adjusts to achieve a clearance of five millimeters between the guide roller and the largest sprocket.
  • Now we are checking. First at home, pedaling. Then on the street.

ebike dual motor control with 3 speed switch

If something does not satisfy the process, repeat again, more carefully.

All described actions require only care, time and a little patience. In any case, performing such actions at home will be much cheaper than servicing. NOT to mention gaining invaluable experience.